MalcolmM

Great thanks I will check it out ?

Have been slowly rebuilding a Bultaco Sherpa 350. It’s almost at a stage where it can be ridden. So looking for somewhere near Dorchester I can take it for some practice (nothing to testing) not ridden for over 30 years. It’s mechanically sorted so if I survive, I plan to sort paintwork out over the winter. Any suggestions of where to practice would be helpful, have transport so can travel.

Lorenzo. Thanks, don’t worry i will definitely not be using R when it’s rebuilt. out of interest what mix do you run your Bultó’s on. Back in the day (1976) I used to run on 50:1 mineral oil, I know oil has come a long way in past 40 years.

Johnjsy, thanks for the reply. You even answered my next question about what mix to use. As it had not been run for 20 years I was using Castrol R at 50:1 (bit smokey in the man cave but smells great) but always knew it was going to need some major looking at. Will give the semi synthetic at 32:1 a go when rebuilt. Cylinder all booked in, new piston, bearings, gasket and seal set on order.(should keep me quiet for the weekend) Just got to figure out where all those gears go.

Hi All, I am in the process of rebuilding the engine in my Bultaco Sherpa 350 (1976). At the moment the bore is STD although badly worn so thinking of taking it out to one under the maximum size (any thoughts) Also big end bearing, no noise and no up and down movement on the bearing, but there is a mile of sideways movement between the webs, is this normal? It will get rebuilt with all new bearings seal and gaskets etc, Any help thoughts or recommendations would be gratefully received.